Schematic for Oregon Electronics D4 Dual Power Supply

[Ronsonic]

Hi, I'm working my way through this old bench power supply and life would be better if I could find a map.

I'm an experienced tech and know tubes well enough, but .... help would help.

Even a source where I could buy one would be beneficial.

Thank you

 

[PRR]

https://people.ohio.edu/postr/bapix/OregonA3A.htm

Paragraph 5.

 

[Ronsonic]

Thanks, somewhat different model, but worth following up for clues.